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Finding the Fourth Proportional to 5,167.52, 7,128.16 and 4,821.92

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Solution

The fourth proportional to 5,167.52, 7,128.16 and 4,821.92 is: 6,651.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,167.52 : 7,128.16 = 4,821.92 : x
  2. Step 2: Convert to fraction form
    5,167.52/7,128.16 = 4,821.92/x
  3. Step 3: Cross multiply
    5,167.52x = 7,128.16 × 4,821.92
  4. Step 4: Simplify right side
    5,167.52x = 34,371,417.27
  5. Step 5: Solve for x
    x = 34,371,417.27/5,167.52
  6. Step 6: Final answer
    x = 6,651.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.